package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.Collections;
import java.util.List;

@Slf4j
@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    @Override
    public void addShoppingCart(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        //只能是自己的购物车
        shoppingCart.setUserId(BaseContext.getCurrentId());
        //判断自己的购物车是否为空
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList!= null && shoppingCartList.size() ==1) {
            //说明有
            ShoppingCart cart = shoppingCartList.get(0);
            cart.setNumber(cart.getNumber() + 1);
            shoppingCartMapper.update(cart);
        } else {
            //说明没有
            //然后再判断添加的是菜品还是套餐
            Long dishId = shoppingCartDTO.getDishId();
            if (dishId != null) {
                //添加的是菜品
                Dish dish = dishMapper.getById(dishId);
                shoppingCart.setAmount(dish.getPrice());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setName(dish.getName());

            }else {
                //添加的是套餐
                Setmeal setmeal = setmealMapper.getById(shoppingCartDTO.getSetmealId());
                shoppingCart.setAmount(setmeal.getPrice());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setName(setmeal.getName());
            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);



        }


    }

    @Override
    public List<ShoppingCart> list() {
        return shoppingCartMapper.list(ShoppingCart.builder().userId(BaseContext.getCurrentId()).build());
    }

    @Override
    public void clean() {
        shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());
    }
}
